Gmail's most recent overhaul came with lots of great changes, though some people didn't like its new toolbar buttons, which had icons instead of the arguably more descriptive text. If you want the old text buttons back, you now have the option to switch them in Gmail's settings.

To toggle the buttons back to text, head to Gmail's settings and, under the General tab, scroll down to "Button Labels". click on the radio button next to "Text", save your changes, and head back to the inbox to see the new (old) buttons. Of course, if you like the icons but just wish it were a bit easier to differentiate between the buttons, there are other ways to do that too.